Cheapest priced copy (March of the Machine Commander): $5.49 at Card Kingdom, near mint, their price list as of .
Vodalian Wave-Knight 
Creature — Merfolk Knight · 3/3 · Rare · March of the Machine Commander · #43
Whenever you draw a card, put a +1/+1 counter on each other Merfolk and/or Knight you control.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $5.49 to $5.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| March of the Machine Commander | 43 | Rare | $5.49 | — |
| March of the Machine Commander | 130 | Rare | $5.99 | — |
One ruling from Wizards of the Coast
- 14 April 2023If a creature you control is both a Merfolk and a Knight, it gets one +1/+1 counter.